2001—2020年三江源冻土区植被物候变化特征分析

王泰华, 杨大文

Variation characteristics of vegetation phenology during 2001—2020 on frozen ground zone of the Three Rivers Source Region

Taihua WANG, Dawen YANG

表2 三江源区2001—2020年不同流域与冻土类型生长季NDVI、植被物候与土壤冻融指标变化趋势

Table 2 Temporal trends of growing season NDVI， vegetation phenology and soil freeze-thaw indicators during 2001—2020 at different catchments and frozen ground types of the Three Rivers Source Region

指标 三江源区 流域范围 冻土类型 黄河源 长江源 澜沧江源 多年冻土区 季节冻土区 退化区 GrNDVI 0.017* 0.025* 0.011* 0.014* 0.015* 0.021* 0.016* SOS -4.9* -5.4* -4.4* -4.7* -5.0* -4.7* -5.1* EOS 1.5 1.7 1.2 1.8 1.1 2.1 1.5 DOS 6.3* 7.0* 5.6* 6.3* 6.0* 6.7* 6.5* SOT -1.0 -1.0 -1.3 0.1 -2.3 0.5 0.1 EOT 2.0 2.4 1.8 1.6 2.0 2.1 2.4 DOT 3.0 3.4 3.1 1.5 4.2 1.6 2.2